And if you are not technically Savvy enough to install a network attached server or you just want to keep it simple with a PC and a phone you can probably use and I'm not going to say yes until I test it, rclone to turn the PC into a web dev server and you can install it as a service so that it runs automatically when the computer boots and you log in so you don't need to interact with it at all and then your phone can run Roundsync which is rclone on Android. You configure it to connect to the PC using the webdav protocol.

Then, you can either choose to synchronize on Demand by running roundsync and clicking the sync button or you can schedule it to run every 15 minutes or every hour or however often you want it to.

This is a simple solution for somebody that only wants to have their PC in their phone talk directly to each other without the cloud or a server.

I'm going to test this to make sure after Wednesday this week.

It's another toy to play with.

If you get bored you can give it a try even though you don't need it. It would just be for the heck of it.

For off the network synchronization between my phone and my computer and my Nas I use tailscale VPN peer-to-peer Mesh networking which is free.

no matter where I am my phone has direct access to my computers at home over an encrypted connection that does not require me to open ports on my router. Tailscale took no more than 15 minutes for me to install and configure on my phone and two computers. Actually three because of it's on my Nas too.